Managed Switch User s Manual

Transcription

1 User s Manual ETHERLINE ACCESS M05T/M08T Version 1.0, June U.I Lapp GmH. All rights reserved.

2 User s Manual The software described in this manual is furnished under a license agreement and may be used only in accordance with the terms of that agreement. Copyright Notice 2017 U.I. Lapp GmbH. All rights reserved. Reproduction without permission is prohibited. Disclaimer Information in this document is subject to change without notice and does not represent a commitment on the part of LAPP. LAPP provides this document as is, without warranty of any kind, either expressed or implied, including, but not limited to, its particular purpose. LAPP reserves the right to make improvements and/or changes to this manual, or to the products and/or the programs described in this manual, at any time. Information provided in this manual is intended to be accurate and reliable. However, LAPP assumes no responsibility for its use, or for any infringements on the rights of third parties that may result from its use. This product might include unintentional technical or typographical errors. Changes are periodically made to the information herein to correct such errors, and these changes are incorporated into new editions of the publication. Contact Information U.I. Lapp GmbH Schulze-Delitzsch-Straße 25 D Stuttgart Tel.: +49 (711) Fax: +49 (711) info@lappkabel.de

3 Table of Contents 1. About this Manual Getting Started Serial Console Configuration (115200, None, 8, 1, VT100) Configuration by Telnet Console Configuration by Web Browser Disabling Telnet and Browser Access Featured Functions Configuring Basic Settings System Identification Password Accessible IP List Port Settings Network Parameters GARP Timer Parameters System Time Settings Turbo Ring DIP Switch System File Update Restart Reset to Factory Default Loop Protection Configuring SNMP SNMP Read/Write Settings Trap Settings Private MIB Information Using Traffic Prioritization The Traffic Prioritization Concept Configuring Traffic Prioritization Using Virtual LAN The Virtual LAN (VLAN) Concept Sample Applications of VLANs Using LAPP Switches Configuring Virtual LAN VLAN Table Using Multicast Filtering The Concept of Multicast Filtering Configuring IGMP Snooping Static Multicast MAC Addresses Configuring GMRP GMRP Table Using Bandwidth Management Configuring Bandwidth Management Using Auto Warning Configuring Warning Configuring Relay Warning Using Line-Swap-Fast-Recovery Configuring Line-Swap Fast Recovery Using Set Device IP Configuring Set Device IP Configuring DHCP Relay Agent Using Diagnosis Mirror Port Ping LLDP Function Using Monitor Bandwidth Utilization Mode Packet Counter Mode Using the MAC Address Table Using Event Log Using Syslog ETHERLINE ACCESS Configurator GUI Starting ETHERLINE ACCESS Configurator Broadcast Search Search by IP Address Upgrade Firmware Modify IP Address Export Configuration Import Configuration Unlock Server

4 Set Default A. MIB Groups... A-1

5 1. About 1 this Manual Thank you for purchasing a LAPP managed switch. Read this user s manual to learn how to connect your LAPP switch to Ethernet-enabled devices used for industrial applications. The following two chapters are covered in this user manual: Chapter 2: Getting Started This chapter explains the initial installation process for LAPP switches. There are three ways to access a LAPP switch s configuration settings: serial console, Telnet console, and web console. Chapter 3: Featured Functions This chapter explains how to access a LAPP switch s various configuration, monitoring, and administration functions. These functions can be accessed by serial, Telnet, or web console. The web console is the most user-friendly way to configure a LAPP switch. In this chapter, we use the web console interface to introduce the functions.

6 2. Getting 2 Started In this chapter we explain how to install a LAPP switch for the first time. There are three ways to access the LAPP switch s configuration settings: serial console, Telnet console, or web console. If you do not know the LAPP switch s IP address, you can open the serial console by connecting the LAPP switch to a PC s COM port with a short serial cable. You can open the Telnet or web console over an Ethernet LAN or over the Internet. The following topics are covered in this chapter: Serial Console Configuration (115200, None, 8, 1, VT100) Configuration by Telnet Console Configuration by Web Browser Disabling Telnet and Browser Access

7 Serial Console Configuration (115200, None, 8, 1, VT100) NOTE You cannot connect to the serial and Telnet console at the same time. You can connect to the web console and another console (serial or Telnet) at the same time. However, we strongly recommend that you do NOT do so. Following this advice will allow you to maintain better control over the LAPP switch s configuration. NOTE We recommend either using a commercial tool for serial communication or alternatively you can use a freeware tool like PuTTY or Tera Term. Before running Tera Term, use an RJ45 to DB9-F (or RJ45 to DB25-F) cable to connect the LAPP switch s console port to your PC s COM port (generally COM1 or COM2, depending on how your system is set up). 1. Open Tera Term and choose the serial port. Then click OK. 2. Select Setup > Serial port

8 3. The Serial port setup window should open. Set the fields as follows: for Baud Rate, 8 for Data Bits, None for Parity, and 1 for Stop Bits. In the terminal window, the LAPP switch will prompt you to select a terminal type. Enter 1 to select ansi/vt100 and then press Enter. 4. The serial console will prompt you to log in. Press Enter and select admin or user. Use the down arrow key on your keyboard to select the Password field and enter a password if desired. This password will be required to access any of the consoles (web, serial, Telnet). If you do not wish to create a password, leave the Password field blank and press Enter. 2-3

9 5. The Main Menu of the LAPP switch s serial console should appear. 6. Use the following keys on your keyboard to navigate the LAPP switch s serial console: Key Up, down, right, left arrow keys, Tab Enter Space Esc Function Move the onscreen cursor Display and select options Toggle options Previous menu Configuration by Telnet Console Opening the LAPP switch s Telnet or web console over a network requires that the PC host and LAPP switch are on the same logical subnet. You may need to adjust your PC host s IP address and subnet mask. By default, the LAPP switch s IP address is and the LAPP switch s subnet mask is (referred to as a Class B network). Your PC s IP address must be set to xxx.xxx if the subnet mask is , or to xxx if the subnet mask is NOTE To connect to the LAPP switch s Telnet or web console, your PC host and the LAPP switch must be on the same logical subnet. NOTE When connecting to the LAPP switch s Telnet or web console, first connect one of the LAPP switch s Ethernet ports to your Ethernet LAN, or directly to your PC s Ethernet port. You may use either a straight-through or cross-over Ethernet cable. NOTE The LAPP switch s default IP address is

10 After making sure that the LAPP switch is connected to the same LAN and logical subnet as your PC, open the LAPP switch s Telnet console as follows: 1. Click Start Run from the Windows Start menu and then Telnet to the LAPP switch s IP address from the Windows Run window. You may also issue the Telnet command from a DOS prompt. 2. In the terminal window, the Telnet console will prompt you to select a terminal type. Type 1 to choose ansi/vt100, and then press Enter. 3. The Telnet console will prompt you to log in. Press Enter and then select admin or user. Use the down arrow key on your keyboard to select the Password field and enter a password if desired. This password will be required to access any of the consoles (web, serial, Telnet). If you do not wish to create a password, leave the Password field blank and press Enter. 4. The Main Menu of the LAPP switch s Telnet console should appear. 2-5

11 5. Use the following keys on your keyboard to navigate inside the LAPP switch s Telnet console: Key Up, down, right, left arrow keys, Tab Enter Space Esc Function Move the onscreen cursor Display and select options Toggle options Previous menu NOTE The Telnet console looks and operates in precisely the same manner as the serial console. Configuration by Web Browser The LAPP switch s web console is a convenient platform for modifying the configuration and accessing the built-in monitoring and network administration functions. You can open the LAPP switch s web console using a standard web browser, such as Internet Explorer. NOTE To connect to the LAPP switch s Telnet or web console, your PC host and the LAPP switch must be on the same logical subnet. NOTE If the LAPP switch is configured for other VLAN settings, you must make sure your PC host is on the management VLAN. NOTE When connecting to the LAPP switch s Telnet or web console, first connect one of the LAPP switch s Ethernet ports to your Ethernet LAN, or directly to your PC s Ethernet port. You may use either a straight-through or cross-over Ethernet cable. NOTE The LAPP switch s default IP address is After making sure that the LAPP switch is connected to the same LAN and logical subnet as your PC, open the LAPP switch s web console as follows: 1. Connect your web browser to the LAPP switch s IP address by entering it in the Address or URL field. 2. The LAPP switch s web console will open, and you will be prompted to log in. Select the login account (admin or user) and enter the Password. This password will be required to access any of the consoles (web, serial, Telnet). If you do not wish to create a password, leave the Password field blank and press Enter. NOTE By default, no password is assigned to the LAPP switch s web, serial, and Telnet consoles. 2-6

12 3. After logging in, you may need to wait a few moments for the web console to appear. Use the folders in the left navigation panel to navigate between different pages of configuration options. Disabling Telnet and Browser Access If you are connecting the LAPP switch to a public network but do not intend to manage it over the network, we suggest disabling both the Telnet and web consoles. This is done from the serial console by navigating to System Identification under Basic Settings. Disable or enable the Telnet Console and Web Configuration as shown below: 2-7

13 3. Featured 3 Functions In this chapter, we explain how to access the LAPP switch s various configuration, monitoring, and administration functions. These functions can be accessed by serial, Telnet, or web console. The serial console can be used if you do not know the LAPP switch s IP address and requires that you connect the LAPP switch to a PC COM port. The Telnet and web consoles can be opened over an Ethernet LAN or the Internet. The web console is the most user-friendly interface for configuring a LAPP switch. In this chapter, we use the web console interface to introduce the functions. There are only a few differences between the web console, serial console, and Telnet console. The following topics are covered in this chapter: Configuring Basic Settings Loop Protection Configuring SNMP Using Traffic Prioritization Using Virtual LAN Using Multicast Filtering Using Bandwidth Management Using Auto Warning Using Line-Swap-Fast-Recovery Using Set Device IP Using Diagnosis Using Monitor Using the MAC Address Table Using Event Log Using Syslog

14 Configuring Basic Settings The Basic Settings section includes the most common settings required by administrators to maintain and control a LAPP switch. System Identification System Identification items are displayed at the top of the web console and will be included in alarm s. You can configure the System Identification items to make it easier to identify different switches that are connected to your network. Switch Name Max. 30 characters This option is useful for differentiating between the roles or applications of different units. Example: Factory Switch 1. Managed Redundant Switch [Serial no. of this switch] Switch Location Max. 80 characters This option is useful for differentiating between the locations of Switch Location different units. Example: production line 1. Switch Description Max. 30 characters This option is useful for recording a more detailed description of None the unit. Maintainer Contact Info Max. 30 characters This option is useful for providing information about who is responsible for maintaining this unit and how to contact this person. None 3-2

15 Web Auto-logout (S) 60 to (seconds) Disable or extend the auto-logout time for the web 0 (disabled) management console. Age Time (S) 15 to 3825 (seconds) The length of time that a MAC address entry can remain in the 300 LAPP switch. When an entry reaches its aging time, it ages out and is purged from the switch, effectively cancelling frame forwarding to that specific port. CPU Loading Read-only The CPU usage volume in the past 5 seconds, 30 seconds, and None 5 minutes. Free Memory Read-only The immediately free memory of the switch. None Password The LAPP switch provides two levels of configuration access. The admin account has read/write access of all configuration parameters, and the user account has read access only. A user account can view the configuration, but will not be able to make modifications. ATTENTION By default, a password is not assigned to the LAPP switch s web, Telnet, and serial consoles. If a password is assigned, you will be required to enter the password when you open the serial console, Telnet console, or Web console. Account Admin This account can modify the LAPP switch s configuration. admin User This account can only view the LAPP switch s configurations. 3-3

16 Password Old password Enter the current password. None (max. 16 characters) New password (Max. 16 characters) Enter the desired new password. Leave it blank if you want to remove the password. None Retype password (Max. Enter the desired new password again. Leave it blank if you None 16 characters) want to remove the password. Accessible IP List The LAPP switch uses an IP address-based filtering method to control access. You may add or remove IP addresses to limit access to the LAPP switch. When the accessible IP list is enabled, only addresses on the list will be allowed access to the LAPP switch. Each IP address and netmask entry can be tailored for different situations: Grant access to one host with a specific IP address For example, enter IP address with netmask to allow access to only. Grant access to any host on a specific subnetwork For example, enter IP address with netmask to allow access to all IPs on the subnet defined by this IP address/subnet mask combination. Grant access to all hosts Make sure the accessible IP list is not enabled. Remove the checkmark from Enable the accessible IP list. The following table shows additional configuration examples: Hosts That Need Access Input Format Any host Disable / to / to / to / to /

17 Port Settings Ethernet Port Settings Port settings are included to give the user control over port access, port transmission speed, flow control, and port type (MDI or MDIX). Enable Checked Allows data transmission through the port. Enabled Unchecked Immediately shuts off port access. ATTENTION If a connected device or sub-network is wreaking havoc on the rest of the network, the Disable option under Advanced Settings/Port gives the administrator a quick way to shut off access through this port immediately. Description Media type Displays the media type for each module s port N/A Name Max. 63 characters Specifies an alias for the port to help administrators None differentiate between different ports. Example: PLC 1 Speed Auto Allows the port to use the IEEE 802.3u protocol to negotiate Auto with connected devices. The port and connected devices will determine the best speed for that connection. 100M-Full Choose one of these fixed speed options if the connected 100M-Half 10M-Full Ethernet device has trouble auto-negotiating for line speed. 10M-Half 3-5

18 FDX Flow Ctrl This setting enables or disables flow control for the port when the port s Speed is set to Auto. The final result will be determined by the Auto process between the LAPP switch and connected devices. Enable Enables flow control for this port when the port s Speed is set to Disabled Auto. Disable Disables flow control for this port when the port s Speed is set to Auto. MDI/MDIX Auto Allows the port to auto-detect the port type of the connected Auto Ethernet device and change the port type accordingly. MDI MDIX Choose MDI or MDIX if the connected Ethernet device has trouble auto-negotiating for port type. Network Parameters Network configuration allows users to configure both IPv4 and IPv6 parameters for management access over the network. The LAPP switch supports both IPv4 and IPv6, and can be managed through either of these address types. A brief explanation of each configuration item is given below. 3-6

19 IP4 The IPv4 settings include the switch s IP address and subnet mask, as well as the IP address of the default gateway. In addition, input cells are provided for the IP addresses of a 1st and 2nd DNS server. Auto IP Configuration Disable The LAPP switch s IP address must be set manually. Disable By DHCP The LAPP switch s IP address will be assigned automatically by the network s DHCP server. By BootP The LAPP switch s IP address will be assigned automatically by the network s BootP server. Switch IP Address IP address for the LAPP Assigns the LAPP switch s IP address on a TCP/IP network switch Switch Subnet Mask Subnet mask for the Identifies the type of network the LAPP switch is connected to LAPP switch (e.g., for a Class B network, or for a Class C network). Default Gateway IP address for gateway Specifies the IP address of the router that connects the LAN to None an outside network. DNS IP Address IP address for DNS server Specifies the IP address of the DNS server used by your network. After specifying the DNS server s IP address, you can use the LAPP switch s URL (e.g., to open the web console instead of entering the IP address. None IP address for 2nd DNS Specifies the IP address of the secondary DNS server used by None server your network. The LAPP switch will use the secondary DNS server if the first DNS server fails to connect. DHCP Retry Periods 1 to 30 Users can configure the DHCP retry period manually 1 DHCP Retry Times 0 to Users can configure the times of DHCP retry manually 0 3-7

20 IP6 The IPv6 settings include two distinct address types Link-Local Unicast addresses and Global Unicast addresses. A Link-Local address makes the switch accessible over IPv6 for all devices attached to the same local subnet. To connect to a larger network with multiple segments, the switch must be configured with a Global Unicast address. Global Unicast Address Prefix (Prefix Length: 64 bits) Default Gateway Global Unicast Address Prefix The prefix value must be formatted according to the RFC 2373 None IPv6 Addressing Architecture, using 8 colon-separated 16-bit hexadecimal values. One double colon may be used in the address to indicate the appropriate number of zeros required to fill the undefined fields. Global Unicast Address None Displays the IPv6 Global Unicast address. The network portion None of the Global Unicast address can be configured by specifying the Global Unicast Prefix and using an EUI-64 interface ID in the low order 64 bits. The host portion of the Global Unicast address is automatically generated using the modified EUI-64 form of the interface identifier (Switch s MAC address). Link-Local Address None The network portion of the Link-Local address is FE80 and the host portion of the Link-Local address is automatically generated using the modified EUI-64 form of the interface identifier (Switch s MAC address) None Neighbor Cache None The information in the neighbor cache that includes the neighboring node s IPv6 address, the corresponding Link-Layer address, and the current state of the entry. None 3-8

21 GARP Timer Parameters Generic Attribute Registration Protocol (GARP) was defined by the IEEE working group to provide a generic framework. GARP defines the architecture, rules of operation, state machines, and variables for the registration and de-registration of attribute values. The GARP Timer parameters are exchanged by creating the applications via GVRP (GARP VLAN Registration Protocol) to set the attributes of Timer. Note that you need to set the same GARP timer values on all Layer 2 switches to ensure that the system works successfully. Join Time None Specifies the period of the join time 200 Leave Time None Specifies the period of leave time 600 Leaveall Time None Specifies the period of leaveall time NOTE Leave Time should be at least two times more than Join Time, and Leaveall Time should be larger than Leave Time. System Time Settings The LAPP switch has a time calibration function based on information from an NTP server or user specified time and date. Functions such as automatic warning s can therefore include time and date stamp. 3-9

22 NOTE The LAPP switch does not have a real time clock. The user must update the Current Time and Current Date to set the initial time for the LAPP switch after each reboot, especially when there is no NTP server on the LAN or Internet connection. Current Time User-specified time Allows configuration of the local time in local 24-hour format. None Current Date User-specified date Allows configuration of the local date in yyyy-mm-dd format. None Daylight Saving Time The Daylight Saving Time settings are used to automatically set the LAPP switch s time forward according to national standards. Start Date User-specified date Specifies the date that Daylight Saving Time begins. None End Date User-specified date Specifies the date that Daylight Saving Time ends. None Offset User-specified hour Specifies the number of hours that the time should be set None forward during Daylight Saving Time. System Up Time Indicates how long the LAPP switch remained up since the last cold start. The up time is indicated in seconds. Time Zone Time zone Specifies the time zone, which is used to determine the local time offset from GMT (Greenwich Mean Time). GMT (Greenwich Mean Time) NOTE Changing the time zone will automatically correct the current time. Be sure to set the time zone before setting the time. Time Server IP/Name IP address or name of The IP or domain address (e.g., , None time server time.stdtime.gov.tw, or time.nist.gov). IP address or name of secondary time server The LAPP switch will try to locate the secondary NTP server if the first NTP server fails to connect. Time Protocol NTP NTP (Network Time Protocol) is used to synchronize time with - multiple time servers. The time accuracy is up to 50 ms. SNTP SNTP stands for Simple Network Time Protocol). The synchronization process of SNTP is simpler than NTP. The time accuracy is up to 1 second, which is suitable for low time accuracy requirements

23 Enable NTP/SNTP Server Enable/Disable Enables SNTP/NTP server functionality for clients Disabled Turbo Ring DIP Switch The Turbo Ring DIP Switch page allows users to disable the 4th DIP switch located on the device s outer casing. The default is enabled with Turbo Ring v2 protocol. Once the user changes the 4th hardware DIP switch configuration to ON, the switch will start to initiate the Turbo Ring redundancy protocol based on the configuration. The detailed description is given below: Disable the Turbo Ring Unchecked: unchecked DIP switch The Turbo Ring protocol will be activated automatically when the 4th DIP switch is moved to the ON position. Checked: The Turbo Ring protocol will not be activated automatically, regardless of the position of the 4th DIP switch. Set DIP switch as Turbo If the DIP switch is enabled, Turbo Ring protocol will be enabled Set DIP switch as Ring when the DIP switch is moved to the ON position. Turbo Ring v2 Set DIP switch as Turbo If the DIP switch is enabled, Turbo Ring v2 protocol will be Ring v2 enabled when the DIP switch is moved to the ON position. NOTE If the 4th DIP switch (Turbo Ring) is configured to ON, you will not be able to disable the Turbo Ring DIP switch from the web interface, console, or Telnet. NOTE If you would like to enable VLAN and/or port trunking on any of the last four ports, do not use the fourth DIP switch to activate Turbo Ring. In this case, you should use the Web, Telnet, or Serial console to activate Turbo Ring. System File Update Update System Files by Remote TFTP The LAPP switch supports saving your configuration or log file to a remote TFTP server or local host. Other LAPP switches can also load the configuration at a later time. The LAPP switch also supports loading firmware or configuration files from the TFTP server or a local host. 3-11

24 TFTP Server IP/Name IP address of TFTP server Specifies the IP address or name of the remote TFTP server. Must be specified before downloading or uploading files. None Configuration Files Path and Name Max. 40 characters Specifies the path and file name of the LAPP switch s configuration file on the TFTP server. None Firmware Files Path and Name Max. 40 characters Specifies the path and file name of the LAPP switch s firmware None file. Log Files Path and Name Max. 40 characters Specifies the path and file name of the LAPP switch s log file. None After setting the desired paths and file names, click Download to download the prepared file from the remote TFTP server, or click Upload to upload the desired file to the remote TFTP server. Update System Files from Local PC Configuration File Click Export to save the LAPP switch s configuration file to the local host. Log File Click Export to save the LAPP switch s log file to the local host. NOTE Some operating systems will open the configuration file and log file directly in the web page. In such cases, right click the Export button to save the file. Upgrade Firmware To import a new firmware file into the LAPP switch, click Browse to select the firmware file that is saved on your computer. The upgrade procedure will proceed automatically after clicking Import. 3-12

25 Upload Configure Data To import a configuration file into the LAPP switch, click Browse to select the configuration file already saved on your computer. The upgrade procedure will proceed automatically after clicking Import. Restart This function provides users with a quick way to restart the system. Reset to Factory Default This function provides users with a quick way of restoring the LAPP switch s configuration to factory defaults. The function is available in the serial, Telnet, and web consoles. NOTE After restoring the factory default configuration, you will need to use the default network settings to re-establish the web or Telnet console connection with the LAPP switch. Loop Protection The switch is designed with a loop checking mechanism: Send a control BPDU from the Ethernet port and check if this control BPDU will be sent back to the switch again. If the looping occurs, the switch will automatically block the Ethernet port to prevent looping. Check the Enable box and click Activate to enable the Loop protection. 3-13

26 Configuring SNMP The LAPP switch supports SNMP V1, V2c, and V3. SNMP V1 and SNMP V2c use a community string match for authentication, which means that SNMP servers access all objects with read-only or read/write permissions using the community strings public and private by default. SNMP V3 requires that you select an authentication level of MD5 or SHA, and is the most secure protocol. You can also enable data encryption to enhance data security. Supported SNMP security modes and levels are shown in the following table. Select the security mode and level that will be used to communicate between the SNMP agent and manager. Protocol Version UI Setting Authentication Encryption Method SNMP V1, V2c V1, V2c Read Community Community string No Uses a community string match for authentication. V1, V2c Write/Read Community string No Uses a community string match for authentication. Community SNMP V3 No-Auth No No Uses an account with admin or user to access objects MD5 or SHA Authentication based on MD5 or SHA No Provides authentication based on HMAC-MD5, or HMAC-SHA algorithms. 8-character passwords are the minimum requirement for authentication. MD5 or SHA Authentication based on MD5 or SHA Data encryption key Provides authentication based on HMAC-MD5 or HMAC-SHA algorithms, and data encryption key. 8-character passwords and a data encryption key are the minimum requirements for authentication.and encryption. These parameters are configured on the SNMP page. A more detailed explanation of each parameter is given below the figure. 3-14

27 SNMP Read/Write Settings SNMP Versions V1, V2c, V3, or V1, V2c, Specifies the SNMP protocol version used to manage the switch. V1, V2c or V3 only V1, V2c Read Community Max. 30 characters Specifies the community string to authenticate the SNMP agent Public for read-only access. The SNMP agent will access all objects with read-only permissions using this community string. V1, V2c Write/Read Community Max. 30 characters Specifies the community string to authenticate the SNMP agent Private for read/write access. The SNMP server will access all objects with read/write permissions using this community string. For SNMP V3, two levels of privilege are available accessing the LAPP switch. Admin privilege provides access and authorization to read and write the MIB file. User privilege allows reading of the MIB file only. Admin Auth. Type (for SNMP V1, V2c, V3, and V3 only) No-Auth Allows the admin account to access objects without No authentication. MD5-Auth Authentication will be based on the HMAC-MD5 algorithms. No 8-character passwords are the minimum requirement for authentication. SHA-Auth Authentication will be based on the HMAC-SHA algorithms. 8-character passwords are the minimum requirement for authentication. No Admin Data Encryption Key (for SNMP V1, V2c, V3, and V3 only) Enable Enables data encryption using the specified data encryption key No (between 8 and 30 characters). Disable Specifies that data will not be encrypted. No User Auth. Type (for SNMP V1, V2c, V3 and V3 only) No-Auth Allows the admin account and user account to access objects No without authentication. MD5-Auth Authentication will be based on the HMAC-MD5 algorithms. No 8-character passwords are the minimum requirement for authentication. SHA-Auth Authentication will be based on the HMAC-SHA algorithms. 8-character passwords are the minimum requirement for authentication. No User Data Encryption Key (for SNMP V1, V2c, V3 and V3 only) Enable Enables data encryption using the specified data encryption key No (between 8 and 30 characters). Disable No data encryption No 3-15

28 Trap Settings SNMP traps allow an SNMP agent to notify the NMS of a significant event. The switch supports two SNMP modes, Trap mode and Inform mode. SNMP Trap Mode Trap In Trap mode, the SNMP agent sends an SNMPv1 trap PDU to the NMS. No acknowledgment is sent back from the NMS so the agent has no way of knowing if the trap reached the NMS. SNMP Trap Mode Inform SNMPv2 provides an inform mechanism. When an inform message is sent from the SNMP agent to the NMS, the receiver sends a response to the sender acknowledging receipt of the event. This behavior is similar to that of the get and set requests. If the SNMP agent does not receive a response from the NMS for a period of time, the agent will resend the trap to the NMS agent. The maximum timeout time is 300 sec (default is 1 sec), and the maximum number of retries is 99 times (default is 1 time). When the SNMP agent receives acknowledgement from the NMS, it will stop resending the inform messages. 1st Trap Server IP/Name IP or name Specifies the IP address or name of the primary trap server None used by your network. 1st Trap Community Max. 30 characters Specifies the community string to use for authentication. Public 2nd Trap Server IP/Name IP or name Specifies the IP address or name of the secondary trap server None used by your network. 2nd Trap Community Max. 30 characters Specifies the community string to use for authentication. Public Private MIB Information Switch Object ID Specific Switch ID Indicates the switch s enterprise value. Depends on switch model type NOTE: The Switch Object ID cannot be changed. 3-16

29 Using Traffic Prioritization The LAPP switch s traffic prioritization capability provides Quality of Service (QoS) to your network by making data delivery more reliable. You can prioritize traffic on your network to ensure that high priority data is transmitted with minimum delay. Traffic can be controlled by a set of rules to obtain the required Quality of Service for your network. The rules define different types of traffic and specify how each type should be treated as it passes through the switch. The LAPP switch can inspect both IEEE 802.1p/1Q layer 2 CoS tags, and even layer 3 TOS information to provide consistent classification of the entire network. The LAPP switch s QoS capability improves the performance and determinism of industrial networks for mission critical applications. The Traffic Prioritization Concept Traffic prioritization allows you to prioritize data so that time-sensitive and system-critical data can be transferred smoothly and with minimal delay over a network. The benefits of using traffic prioritization are: Improve network performance by controlling a wide variety of traffic and managing congestion. Assign priorities to different categories of traffic. For example, set higher priorities for time-critical or business-critical applications. Provide predictable throughput for multimedia applications, such as video conferencing or voice over IP, and minimize traffic delay and jitter. Improve network performance as the amount of traffic grows. Doing so will reduce costs since it will not be necessary to keep adding bandwidth to the network. Traffic prioritization uses the four traffic queues that are present in your LAPP switch to ensure that high priority traffic is forwarded on a different queue from lower priority traffic. Traffic prioritization provides Quality of Service (QoS) to your network. LAPP switch traffic prioritization depends on two industry-standard methods: IEEE 802.1D a layer 2 marking scheme. Differentiated Services (DiffServ) a layer 3 marking scheme. IEEE 802.1D Traffic Marking The IEEE Std 802.1D, 1998 Edition marking scheme, which is an enhancement to IEEE Std 802.1D, enables Quality of Service on the LAN. Traffic service levels are defined in the IEEE 802.1Q 4-byte tag, which is used to carry VLAN identification as well as IEEE 802.1p priority information. The 4-byte tag immediately follows the destination MAC address and Source MAC address. The IEEE Std 802.1D, 1998 Edition priority marking scheme assigns an IEEE 802.1p priority level between 0 and 7 to each frame. The priority marking scheme determines the level of service that this type of traffic should receive. Refer to the table below for an example of how different traffic types can be mapped to the eight IEEE 802.1p priority levels. IEEE 802.1p Priority Level IEEE 802.1D Traffic Type 0 Best Effort (default) 1 Background 2 Standard (spare) 3 Excellent Effort (business critical) 4 Controlled Load (streaming multimedia) 5 Video (interactive media); less than 100 milliseconds of latency and jitter 6 Voice (interactive voice); less than 10 milliseconds of latency and jitter 7 Network Control Reserved traffic 3-17

30 Even though the IEEE 802.1D standard is the most widely used prioritization scheme in the LAN environment, it still has some restrictions: It requires an additional 4-byte tag in the frame, which is normally optional for Ethernet networks. Without this tag, the scheme cannot work. The tag is part of the IEEE 802.1Q header, so to implement QoS at layer 2, the entire network must implement IEEE 802.1Q VLAN tagging. It is only supported on a LAN and not across routed WAN links, since the IEEE 802.1Q tags are removed when the packets pass through a router. Differentiated Services (DiffServ) Traffic Marking DiffServ is a Layer 3 marking scheme that uses the DiffServ Code Point (DSCP) field in the IP header to store the packet priority information. DSCP is an advanced intelligent method of traffic marking that allows you to choose how your network prioritizes different types of traffic. DSCP uses 64 values that map to user-defined service levels, allowing you to establish more control over network traffic. The advantages of DiffServ over IEEE 802.1D are: You can configure how you want your switch to treat selected applications and types of traffic by assigning various grades of network service to them. No extra tags are required in the packet. DSCP uses the IP header of a packet to preserve priority across the Internet. DSCP is backwards compatible with IPV4 TOS, which allows operation with existing devices that use a layer 3 TOS enabled prioritization scheme. Traffic Prioritization LAPP switches classify traffic based on layer 2 of the OSI 7 layer model, and the switch prioritizes received traffic according to the priority information defined in the received packet. Incoming traffic is classified based upon the IEEE 802.1D frame and is assigned to the appropriate priority queue based on the IEEE 802.1p service level value defined in that packet. Service level markings (values) are defined in the IEEE 802.1Q 4-byte tag, and consequently traffic will only contain 802.1p priority markings if the network is configured with VLANs and VLAN tagging. The traffic flow through the switch is as follows: A packet received by the LAPP switch may or may not have an 802.1p tag associated with it. If it does not, then it is given a default 802.1p tag (which is usually 0). Alternatively, the packet may be marked with a new 802.1p value, which will result in all knowledge of the old 802.1p tag being lost. Because the 802.1p priority levels are fixed to the traffic queues, the packet will be placed in the appropriate priority queue, ready for transmission through the appropriate egress port. When the packet reaches the head of its queue and is about to be transmitted, the device determines whether or not the egress port is tagged for that VLAN. If it is, then the new 802.1p tag is used in the extended 802.1D header. The LAPP switch will check a packet received at the ingress port for IEEE 802.1D traffic classification, and then prioritize it based on the IEEE 802.1p value (service levels) in that tag. It is this 802.1p value that determines which traffic queue the packet is mapped to. Traffic Queues The hardware of LAPP switches has multiple traffic queues that allow packet prioritization to occur. Higher priority traffic can pass through the LAPP switch without being delayed by lower priority traffic. As each packet arrives in the LAPP switch, it passes through any ingress processing (which includes classification, marking/re-marking), and is then sorted into the appropriate queue. The switch then forwards packets from each queue. LAPP switches support two different queuing mechanisms: Weight Fair: This method services all the traffic queues, giving priority to the higher priority queues. Under most circumstances, the Weight Fair method gives high priority precedence over low priority, but in the event that high priority traffic does not reach the link capacity, lower priority traffic is not blocked. Strict: This method services high traffic queues first; low priority queues are delayed until no more high priority data needs to be sent. The Strict method always gives precedence to high priority over low priority. 3-18

31 Configuring Traffic Prioritization Quality of Service (QoS) provides a traffic prioritization capability to ensure that important data is delivered consistently and predictably. The LAPP switch can inspect IEEE 802.1p/1Q layer 2 CoS tags, and even layer 3 TOS information, to provide a consistent classification of the entire network. The LAPP switch s QoS capability improves your industrial network s performance and determinism for mission critical applications. QoS Classification The LAPP switch supports inspection of layer 3 TOS and/or layer 2 CoS tag information to determine how to classify traffic packets. Queuing Mechanism Weight Fair The LAPP switch has 4 priority queues. In the weight fair Weight Fair scheme, an 8, 4, 2, 1 weighting is applied to the four priorities. This approach prevents the lower priority frames from being starved of opportunity for transmission with only a slight delay to the higher priority frames. Strict In the Strict-priority scheme, all top-priority frames egress a port until that priority s queue is empty, and then the next lower priority queue s frames egress. This approach can cause the lower priorities to be starved of opportunity for transmitting any frames but ensures that all high priority frames will egress the switch as soon as possible. Inspect TOS Enable/Disable Enables or disables the LAPP switch for inspecting Type of Service (TOS) bits in the IPV4 frame to determine the priority of each frame. Enabled 3-19

32 Inspect COS Enable/Disable Enables or disables the LAPP switch for inspecting 802.1p COS Enabled tags in the MAC frame to determine the priority of each frame. Inspect Port Priority Port priority The port priority has 4 priority queues. Low, normal, medium, 3(Normal) high priority queue option is applied to each port. NOTE The priority of an ingress frame is determined in the following order: 1. Inspect TOS 2. Inspect CoS 3. Port Priority NOTE The designer can enable these classifications individually or in combination. For instance, if a hot higher priority port is required for a network design, Inspect TOS and Inspect CoS can be disabled. This setting leaves only port default priority active, which results in all ingress frames being assigned the same priority on that port. CoS Mapping CoS Value and Priority Queues Low/Normal/ Medium/High Maps different CoS values to 4 different egress queues. 0: Low 1: Low 2: Normal 3: Normal 4: Medium 5: Medium 6: High 7: High 3-20

33 TOS/DiffServ Mapping ToS (DSCP) Value and Priority Queues Low/Normal/ Medium/High Maps different TOS values to 4 different egress queues. 1 to 16: Low 17 to 32: Normal 33 to 48: Medium 49 to 64: High Using Virtual LAN Setting up Virtual LANs (VLANs) on your LAPP switch increases the efficiency of your network by dividing the LAN into logical segments, as opposed to physical segments. In general, VLANs are easier to manage. The Virtual LAN (VLAN) Concept What is a VLAN? A VLAN is a group of devices that can be located anywhere on a network, but which communicate as if they are on the same physical segment. With VLANs, you can segment your network without being restricted by physical connections a limitation of traditional network design. With VLANs you can segment your network according into: Departmental groups You could have one VLAN for the marketing department, another for the finance department, and another for the product development department. Hierarchical groups You could have one VLAN for directors, another for managers, and another for general staff. Usage groups You could have one VLAN for users and another for multimedia users. 3-21

34 Switch A Backbone connects multiple switches Switch B Department 1 VLAN Department 2 VLAN 2 Benefits of VLANs The main benefit of VLANs is that they provide a network segmentation system that is far more flexible than traditional networks. Using VLANs also provides you with three other benefits: VLANs ease the relocation of devices on networks: With traditional networks, network administrators spend much of their time dealing with moves and changes. If users move to a different subnetwork, the addresses of each host must be updated manually. With a VLAN setup, if a host originally on VLAN Marketing, for example, is moved to a port on another part of the network, and retains its original subnet membership, you only need to specify that the new port is on VLAN Marketing. You do not need to do any re-cabling. VLANs provide extra security: Devices within each VLAN can only communicate with other devices on the same VLAN. If a device on VLAN Marketing needs to communicate with devices on VLAN Finance, the traffic must pass through a routing device or Layer 3 switch. VLANs help control traffic: With traditional networks, congestion can be caused by broadcast traffic that is directed to all network devices, regardless of whether or not they need it. VLANs increase the efficiency of your network because each VLAN can be set up to contain only those devices that need to communicate with each other. VLANs and the Rackmount switch Your LAPP switch provides support for VLANs using IEEE Std 802.1Q This standard allows traffic from multiple VLANs to be carried across one physical link. The IEEE Std 802.1Q-1998 standard allows each port on your LAPP switch to be placed as follows: On a single VLAN defined in the LAPP switch On several VLANs simultaneously using 802.1Q tagging The standard requires that you define the 802.1Q VLAN ID for each VLAN on your LAPP switch before the switch can use it to forward traffic: Managing a VLAN A new or initialized LAPP switch contains a single VLAN the Default VLAN. This VLAN has the following definition: VLAN Name Management VLAN 802.1Q VLAN ID 1 (if tagging is required) Department 3 VLAN 3 All the ports are initially placed on this VLAN, and it is the only VLAN that allows you to access the management software of the LAPP switch over the network. 3-22

35 Communication Between VLANs If devices connected to a VLAN need to communicate to devices on a different VLAN, a router or Layer 3 switching device with connections to both VLANs needs to be installed. Communication between VLANs can only take place if they are all connected to a routing or Layer 3 switching device. VLANs: Tagged and Untagged Membership The LAPP switch supports 802.1Q VLAN tagging, a system that allows traffic for multiple VLANs to be carried on a single physical link (backbone, trunk). When setting up VLANs you need to understand when to use untagged and tagged membership of VLANs. Simply put, if a port is on a single VLAN it can be an untagged member, but if the port needs to be a member of multiple VLANs, tagged membership must be defined. A typical host (e.g., clients) will be untagged members of one VLAN, defined as an Access Port in a LAPP switch, while inter-switch connections will be tagged members of all VLANs, defined as a Trunk Port in a LAPP switch. The IEEE Std 802.1Q-1998 defines how VLANs operate within an open packet-switched network. An 802.1Q compliant packet carries additional information that allows a switch to determine which VLAN the port belongs to. If a frame is carrying the additional information, it is known as a tagged frame. To carry multiple VLANs across a single physical link (backbone, trunk), each packet must be tagged with a VLAN identifier so that the switches can identify which packets belong in which VLAN. To communicate between VLANs, a router must be used. The LAPP switch supports three types of VLAN port settings: Access Port: The port connects to a single device that is not tagged. The user must define the default port PVID that assigns which VLAN the device belongs to. Once the ingress packet of this Access Port egresses to another Trunk Port (the port needs all packets to carry tag information), the LAPP switch will insert this PVID into this packet so the next 802.1Q VLAN switch can recognize it. Trunk Port: The port connects to a LAN that consists of untagged devices, tagged devices and/or switches and hubs. In general, the traffic of the Trunk Port must have a Tag. Users can also assign a PVID to a Trunk Port. The untagged packet on the Trunk Port will be assigned the port default PVID as its VID. Hybrid Port: The port is similar to a Trunk port, except users can explicitly assign tags to be removed from egress packets. The following section illustrates how to use these ports to set up different applications. Sample Applications of VLANs Using LAPP Switches

36 In this application, Port 1 connects a single untagged device and assigns it to VLAN 5; it should be configured as Access Port with PVID 5. Port 2 connects a LAN with two untagged devices belonging to VLAN 2. One tagged device with VID 3 and one tagged device with VID 4. It should be configured as Trunk Port with PVID 2 for untagged device and Fixed VLAN (Tagged) with 3 and 4 for tagged device. Since each port can only have one unique PVID, all untagged devices on the same port must belong to the same VLAN. Port 3 connects with another switch. It should be configured as Trunk Port GVRP protocol will be used through the Trunk Port. Port 4 connects a single untagged device and assigns it to VLAN 2; it should be configured as Access Port with PVID 2. Port 5 connects a single untagged device and assigns it to VLAN 3; it should be configured as Access Port with PVID 3. Port 6 connect a single untagged device and assigns it to VLAN 5; it should be configured as Access Port with PVID 5. Port 7 connects a single untagged device and assigns it to VLAN 4; it should be configured as Access Port with PVID 4. After the application is properly configured: Packets from Device A will travel through Trunk Port 3 with tagged VID 5. Switch B will recognize its VLAN, pass it to port 6, and then remove tags received successfully by Device G, and vice versa. Packets from Devices B and C will travel through Trunk Port 3 with tagged VID 2. Switch B recognizes its VLAN, passes it to port 4, and then removes tags received successfully by Device F, and vice versa. Packets from Device D will travel through Trunk Port 3 with tagged VID 3. Switch B will recognize its VLAN, pass to port 5, and then remove tags received successfully by Device H. Packets from Device H will travel through Trunk Port 3 with PVID 3. Switch A will recognize its VLAN and pass it to port 2, but will not remove tags received successfully by Device D. Packets from Device E will travel through Trunk Port 3 with tagged VID 4. Switch B will recognize its VLAN, pass it to port 7, and then remove tags received successfully by Device I. Packets from Device I will travel through Trunk Port 3 with tagged VID 4. Switch A will recognize its VLAN and pass it to port 2, but will not remove tags received successfully by Device E. Configuring Virtual LAN VLAN Settings To configure 802.1Q VLAN and port-based VLANs on the LAPP switch, use the VLAN Settings page to configure the ports. VLAN Mode 802.1Q VLAN Set VLAN mode to 802.1Q VLAN 802.1Q VLAN Port-based VLAN Set VLAN mode to Port-based VLAN 3-24

37 802.1Q VLAN Settings Management VLAN ID VLAN ID from 1 to 4094 Assigns the VLAN ID of this switch. 1 Port Type Access Port type is used to connect single devices without tags. Access Trunk Select Trunk port type to connect another 802.1Q VLAN aware switch Hybrid Select Hybrid port to connect another Access 802.1Q VLAN aware switch or another LAN that combines tagged and/or untagged devices and/or other switches/hubs. ATTENTION For communication redundancy in the VLAN environment, set Redundant Port Coupling Port and Coupling Control Port as Trunk Port since these ports act as the backbone to transmit all packets of different VLANs to different switch units. Port PVID VID ranges from 1 to 4094 Sets the default VLAN ID for untagged devices that connect to 1 the port. Fixed VLAN List (Tagged) VID ranges from 1 to 4094 This field will be active only when selecting the Trunk or Hybrid None port type. Set the other VLAN ID for tagged devices that connect to the port. Use commas to separate different VIDs. 3-25

38 Fixed VLAN List (Untagged) VID range from 1 to This field will be active only when selecting the Hybrid None 4094 port type. Set the other VLAN ID for tagged devices that connect to the port and tags that need to be removed in egress packets. Use commas to separate different VIDs. Forbidden VLAN List VID ranges from 1 to 4094 This field will be active only when selecting the Trunk or Hybrid None port type. Set the other VLAN IDs that will not be supported by this port. Use commas to separate different VIDs. Port-Based VLAN Settings Check each specific port to assign its VLAN ID in the table. The maximum VLAN ID is the same as your number of switch ports. NOTE IGMP Snooping will be disabled when Port-Based VLAN is enabed. VLAN Table Use the 802.1Q VLAN table to review the VLAN groups that were created, Joined Access Ports, Trunk Ports, and Hybrid Ports, and use the Port-based VLAN table to review the VLAN group and Joined Ports. 3-26

39 Using Multicast Filtering Multicast filtering improves the performance of networks that carry multicast traffic. This section explains multicasts, multicast filtering, and how multicast filtering can be implemented on your LAPP switch. The Concept of Multicast Filtering What is an IP Multicast? A multicast is a packet sent by one host to multiple hosts. Only those hosts that belong to a specific multicast group will receive the multicast. If the network is set up correctly, a multicast can only be sent to an end-station or a subset of end-stations on a LAN or VLAN that belong to the multicast group. Multicast group members can be distributed across multiple subnets, so that multicast transmissions can occur within a campus LAN or over a WAN. In addition, networks that support IP multicast send only one copy of the desired information across the network until the delivery path that reaches group members diverges. To make more efficient use of network bandwidth, it is only at these points that multicast packets are duplicated and forwarded. A multicast packet has a multicast group address in the destination address field of the packet s IP header. Benefits of Multicast The benefits of using IP multicast are: It uses the most efficient, sensible method to deliver the same information to many receivers with only one transmission. It reduces the load on the source (for example, a server) since it will not need to produce several copies of the same data. It makes efficient use of network bandwidth and scales well as the number of multicast group members increases. Works with other IP protocols and services, such as Quality of Service (QoS). Multicast transmission makes more sense and is more efficient than unicast transmission for some applications. For example, multicasts are often used for video-conferencing, since high volumes of traffic must be sent to several end-stations at the same time, but where broadcasting the traffic to all end-stations would cause a substantial reduction in network performance. Furthermore, several industrial automation protocols, such as Allen-Bradley, EtherNet/IP, Siemens Profibus, and Foundation Fieldbus HSE (High Speed Ethernet), use multicast. These industrial Ethernet protocols use publisher/subscriber communications models by multicasting packets that could flood a network with heavy traffic. IGMP Snooping is used to prune multicast traffic so that it travels only to those end destinations that require the traffic, reducing the amount of traffic on the Ethernet LAN. Multicast Filtering Multicast filtering ensures that only end-stations that have joined certain groups receive multicast traffic. With multicast filtering, network devices only forward multicast traffic to the ports that are connected to registered end-stations. The following two figures illustrate how a network behaves without multicast filtering, and with multicast filtering. 3-27

40 Network without multicast filtering All hosts receive the multicast traffic, even if they don t need it. Network with multicast filtering Hosts only receive dedicated traffic from other hosts belonging to the same group. Multicast Filtering and LAPP s Industrial Rackmount Switches The LAPP switch has three ways to achieve multicast filtering: IGMP (Internet Group Management Protocol) Snooping, GMRP (GARP Multicast Registration Protocol), and adding a static multicast MAC manually to filter multicast traffic automatically. Snooping Mode Snooping Mode allows your switch to forward multicast packets only to the appropriate ports. The switch snoops on exchanges between hosts and an IGMP device, such as a router, to find those ports that want to join a multicast group, and then configures its filters accordingly. IGMP Snooping Enhanced Mode Snooping Enhanced Mode allows your switch to forward multicast packets to the LAPP switch s member port only. If you disable Enhanced Mode, data streams will run to the querier port as well as the member port. Query Mode Query mode allows the LAPP switch to work as the Querier if it has the lowest IP address on the subnetwork to which it belongs. IGMP querying is enabled by default on the LAPP switch to ensure proceeding query election. Enable query mode to run multicast sessions on a network that does not contain IGMP routers (or queriers). Query mode allows users to enable IGMP snooping by VLAN ID. LAPP switches support IGMP snooping version 1 and version

41 IGMP Multicast Filtering IGMP is used by IP-supporting network devices to register hosts with multicast groups. It can be used on all LANs and VLANs that contain a multicast capable IP router, and on other network devices that support multicast filtering. LAPP switches support IGMP version 1 and 2. IGMP version 1 and 2 work as follows: The IP router (or querier) periodically sends query packets to all end-stations on the LANs or VLANs that are connected to it. For networks with more than one IP router, the router with the lowest IP address is the querier. A switch with IP address lower than the IP address of any other IGMP queriers connected to the LAN or VLAN can become the IGMP querier. When an IP host receives a query packet, it sends a report packet back that identifies the multicast group that the end-station would like to join. When the report packet arrives at a port on a switch with IGMP Snooping enabled, the switch knows that the port should forward traffic for the multicast group, and then proceeds to forward the packet to the router. When the router receives the report packet, it registers that the LAN or VLAN requires traffic for the multicast groups. When the router forwards traffic for the multicast group to the LAN or VLAN, the switches only forward the traffic to ports that received a report packet. IGMP version comparison IGMP Version Main Features Reference V1 a. Periodic query RFC-1112 V2 Compatible with V1 and adds: RFC-2236 a. Group-specific query b. Leave group messages c. Resends specific queries to verify leave message was the last one in the group d. Querier election GMRP (GARP Multicast Registration Protocol) LAPP switches support IEEE 802.1D-1998 GMRP (GARP Multicast Registration Protocol), which is different from IGMP (Internet Group Management Protocol). GMRP is a MAC-based multicast management protocol, whereas IGMP is IP-based. GMRP provides a mechanism that allows bridges and end stations to register or de-register Group membership information dynamically. GMRP functions similarly to GVRP, except that GMRP registers multicast addresses on ports. When a port receives a GMRP-join message, it will register the multicast address to its database if the multicast address is not registered, and all the multicast packets with that multicast address are able to be forwarded from this port. When a port receives a GMRP-leave message, it will de-register the multicast address from its database, and all the multicast packets with this multicast address will not be able to be forwarded from this port. Static Multicast MAC Some devices may only support multicast packets, but not support either IGMP Snooping or GMRP. The LAPP switch supports adding multicast groups manually to enable multicast filtering. Enabling Multicast Filtering Use the serial console or web interface to enable or disable IGMP Snooping and IGMP querying. If IGMP Snooping is not enabled, then IP multicast traffic is always forwarded, flooding the network. Configuring IGMP Snooping NOTE IGMP Snooping will be disabled when Port-Based VLAN is enabed. IGMP Snooping provides the ability to prune multicast traffic so that it travels only to those end destinations that require that traffic, thereby reducing the amount of traffic on the Ethernet LAN. 3-29

42 Layer 2 switch setting page IGMP Snooping Enable Enable/Disable Checkmark the IGMP Snooping Enable checkbox near the top of the window to enable the IGMP Snooping function globally. Disabled NOTE: You should enable IGMP Snooping if the network also uses non-lapp 3rd party switches. Query Interval Numerical value, input by the user Sets the query interval of the Querier function globally. Valid settings are from 20 to 600 seconds. 125 seconds IGMP Snooping Enhanced Mode Enable IGMP Multicast packets will be forwarded to: Disable Auto-Learned Multicast Querier Ports Member Ports Disable IGMP Multicast packets will be forwarded to: Auto-Learned Multicast Router Ports Static Multicast Querier Ports Querier Connected Ports Member Ports NOTE: IGMP Snooping Enhanced Mode in networks composed entirely of LAPP switches. IGMP Snooping Enable/Disable Enables or disables the IGMP Snooping function on that particular VLAN. Enabled if IGMP Snooping is enabled globally 3-30

43 Querier Enable/Disable Enables or disables the LAPP switch s querier function. Enabled if IGMP Snooping is enabled globally V1/V2 and V3 checkbox V1/V2: Enables switch to send IGMP snooping version 1 and 2 V1/V2 queries V3: Enables switch to send IGMP snooping version 3 queries Static Multicast Querier Port Select/Deselect Select the ports that will connect to the multicast routers. These ports will receive all multicast packets from the source. This option is only active when IGMP Snooping is enabled. Disabled NOTE If a router or layer 3 switch is connected to the network, it will act as the Querier, and consequently this Querier option will be disabled on all LAPP layer 2 switches. If all switches on the network are LAPP layer 2 switches, then only one layer 2 switch will act as Querier. IGMP Table The LAPP switch displays the current active IGMP groups that were detected. View IGMP group setting per VLAN ID on this page. The information shown in the table includes: Auto-learned Multicast Router Port: This indicates that a multicast router connects to/sends packets from these port(s) Static Multicast Router Port: Displays the static multicast querier port(s) Querier Connected Port: Displays the port which is connected to the querier. Act as a Querier: Displays whether or not this VLAN is a querier (winner of a election). 3-31

44 Static Multicast MAC Addresses Add New Static Multicast Address to the List MAC Address Input the multicast MAC address of this host. None MAC Address Integer Input the number of the VLAN that the host with this MAC None address belongs to. Join Port Select/Deselect Checkmark the appropriate check boxes to select the join ports None for this multicast group. 3-32

45 Configuring GMRP GMRP is a MAC-based multicast management protocol, whereas IGMP is IP-based. GMRP provides a mechanism that allows bridges and end stations to register or un-register Group membership information dynamically. GMRP enable Enable/Disable Enables or disables the GMRP function for the port listed in the Disable Port column GMRP Table The LAPP switch displays the current active GMRP groups that were detected Setting Fixed Ports Learned Ports Description This multicast address is defined by static multicast. This multicast address is learned by GMRP. Using Bandwidth Management In general, one host should not be allowed to occupy unlimited bandwidth, particularly when the device malfunctions. For example, so-called broadcast storms could be caused by an incorrectly configured topology, or a malfunctioning device. LAPP industrial Ethernet switches not only prevents broadcast storms, but can also be configured to a different ingress rate for all packets, giving administrators full control of their limited bandwidth to prevent undesirable effects caused by unpredictable faults. 3-33

46 Configuring Bandwidth Management Traffic Rate Limiting Settings Control Mode Description Factory Default Normal Set the max. ingress rate limit for different packet types Normal Port Disable When the ingress multicast and broadcast packets exceed the ingress rate limit, the port will be disabled for a certain period. During this period, all packets from this port will be discarded. Ingress Rate Limit - Normal Policy Description Factory Default Limit All Select the ingress rate limit for different packet types from the Limit Broadcast 8M Limit Broadcast, Multicast, Flooded Unicast Limit Broadcast, Multicast Limit Broadcast following options: Not Limited, 128K, 256K, 512K, 1M, 2M, 4M, 8M 3-34

47 Ingress Rate Limit Port Disable Port disable duration (1~65535 seconds) When the ingress multicast and broadcast packets exceed the 30 second ingress rate limit, the port will be disabled for this period of time. During this time, all packets from this port will be discarded. Ingress (fps) Select the ingress rate (fps) limit for all packets from the Not Limited following options: Not Limited, 4464, 7441, 14881, 22322, 37203, 52084, Egress Rate Limit Egress rate Select the ingress rate limit (% of max. throughput) for all packets from the following options: Not Limited, 3%, 5%, 10%, 15%, 25%, 35%, 50%, 65%, 85% Not Limited Using Auto Warning Since industrial Ethernet devices are often located at the endpoints of a system, these devices will not always know what is happening elsewhere on the network. This means that an industrial Ethernet switch that connects to these devices must provide system maintainers with real-time alarm messages. Even when control engineers are out of the control room for an extended period of time, they can still be informed of the status of devices almost instantaneously when exceptions occur. The LAPP switch supports different approaches to warn engineers automatically, such as and relay output. It also supports two digital inputs to integrate sensors into your system to automate alarms by and relay output. Configuring Warning The Auto Warning function uses to alert the user when certain user-configured events take place. Three basic steps are required to set up the Auto Warning function: Configure Event Types Select the desired Event types from the Console or Web Browser Event type page (a description of each event type is given later in the Alarm Events setting subsection). Configure Settings To configure a LAPP switch s setup from the serial, Telnet, or web console, enter your Mail Server IP/Name (IP address or name), Account Name, Account Password, Retype New Password, and the address to which warning messages will be sent. Activate your settings and if necessary, test the After configuring and activating your LAPP switch s Event Types and Setup, you can use the Test function to see if your addresses and mail server address have been properly configured. 3-35

48 Configuring Event Types Event Types can be divided into two basic groups: System Events and Port Events. System Events are related to the overall function of the switch, whereas Port Events are related to the activity of a specific port. System Events Switch Cold Start Switch Warm Start Power Transition (On Off) Power Transition (Off On) Configuration Change Activated Authentication Failure Comm. Redundancy Topology Changed Warning is sent when Power is cut off and then reconnected. LAPP switch is rebooted, such as when network parameters are changed (IP address, subnet mask, etc.). LAPP switch is powered down. LAPP switch is powered up. Any configuration item has been changed. An incorrect password was entered. If any Spanning Tree Protocol switches have changed their position (applies only to the root of the tree). If the Master of the Turbo Ring has changed or the backup path is activated. Port Events Link-ON Link-OFF Traffic-Overload Traffic-Threshold (%) Traffic-Duration (sec.) Warning is sent when The port is connected to another device. The port is disconnected (e.g., the cable is pulled out, or the opposing device shuts down). The port s traffic surpasses the Traffic-Threshold for that port (provided this item is Enabled). Enter a nonzero number if the port s Traffic-Overload item is Enabled. A Traffic-Overload warning is sent every Traffic-Duration seconds if the average Traffic-Threshold is surpassed during that time period. NOTE The Traffic-Overload, Traffic-Threshold (%), and Traffic-Duration (sec.) Port Event items are related. If you Enable the Traffic-Overload event, then be sure to enter a nonzero Traffic-Threshold percentage, as well as a Traffic-Duration between 1 and 300 seconds. NOTE The sender of warning messages will have the following form: Managed-Redundant-Switch-00000@Switch_Location where Managed-Redundant-Switch is the default Switch Name, is the LAPP switch s serial number, and Switch_Location is the default Server Location. Refer to the Basic Settings section to see how to modify Switch Name and Switch Location. 3-36

49 Configuring Settings Mail Server IP/Name IP address The IP Address of your server. None SMTP Port SMTP port Display the SMTP port number 25 Account Name Max. 45 of charters Your account. None Password Setting Disable/Enable to To reset the password from the Web Browser interface, click Disable change password the Change password check-box, type the Old password, type the New password, retype the New password, and then click Activate (Max. of 45 characters). Old password Type the current password when changing the password None New password Type new password when enabled to change password; Max. None 45 characters. Retype password If you type a new password in the Password field, you will be None required to retype the password in the Retype new password field before updating the new password. Address Max. of 30 characters You can set up to 4 addresses to receive alarm s None from the LAPP switch. Send Test After you complete the settings, you should first click Activate to activate those settings, and then press the Send Test button to verify that the settings are correct. 3-37

50 Configuring Relay Warning The Auto Relay Warning function uses relay output to alert the user when certain user-configured events take place. There are two basic steps required to set up the Relay Warning function: Configure Relay Event Types Select the desired Event types from the Console or Web Browser Event type page (a description of each event type is given later in the Relay Alarm Events setting subsection). Activate your settings After completing the configuration procedure, you will need to activate your LAPP switch s Relay Event Types. Configuring Event Types Event Types can be divided into two basic groups: System Events and Port Events. System Events are related to the overall function of the switch, whereas Port Events are related to the activity of a specific port. The LAPP switch supports two relay outputs. You can configure which relay output is related to which events, which helps administrators identify the importance of the different events. System Events Power Transition (On -> Off) Power Transition (Off -> On) Turbo Ring Break Warning Relay output is triggered when LAPP switch is powered down LAPP switch is powered up The Turbo Ring is broken. Only the MASTER switch of Turbo Ring will output warning relay. Port Events Link-ON Link-OFF Traffic-Overload Traffic-Threshold (%) Traffic-Duration (sec.) Warning is sent when The port is connected to another device. The port is disconnected (e.g., the cable is pulled out, or the opposing device shuts down). The port s traffic surpasses the Traffic-Threshold for that port (provided this item is Enabled). Enter a nonzero number if the port s Traffic-Overload item is Enabled. A Traffic-Overload warning is sent every Traffic-Duration seconds if the average Traffic-Threshold is surpassed during that time period. Override relay alarm settings Check the checkbox to override the relay warning setting temporarily. Releasing the relay output will allow administrators to fix any problems with the warning condition 3-38

51 NOTE The Traffic-Overload, Traffic-Threshold (%), and Traffic-Duration (sec) Port Event items are related. If you Enable the Traffic-Overload event, then be sure to enter a nonzero Traffic-Threshold percentage, as well as a Traffic-Duration between 1 and 300 seconds. Warning List Use this table to see if any relay alarms have been issued. Using Line-Swap-Fast-Recovery The Line-Swap Fast Recovery function, which is enabled by default, allows the LAPP switch to return to normal operation extremely quickly after devices are unplugged and then re-plugged into different ports. The recovery time is on the order of a few milliseconds (compare this with standard commercial switches for which the recovery time could be on the order of several minutes). To disable the Line-Swap Fast Recovery function, or to re-enable the function after it has already been disabled, access either the Console utility s Line-Swap recovery page, or the Web Browser interface s Line-Swap fast recovery page, as shown below. Configuring Line-Swap Fast Recovery Enable Line-Swap-Fast-Recovery Enable/Disable Checkmark the checkbox to enable the Line-Swap-Fast-Recovery function Enable Using Set Device IP To reduce the effort required to set up IP addresses, the LAPP switch comes equipped with DHCP/BootP server and RARP protocol to set up IP addresses of Ethernet-enabled devices automatically. When enabled, the Set device IP function allows the LAPP switch to assign specific IP addresses automatically to connected devices that are equipped with DHCP Client or RARP protocol. In effect, the LAPP switch acts as a DHCP server by assigning a connected device with a specific IP address stored in its internal memory. Each time the connected device is switched on or rebooted, the LAPP switch sends the device the desired IP address. Take the following steps to use the Set device IP function: 3-39

52 STEP 1 Set up the connected devices Set up those Ethernet-enabled devices connected to the LAPP switch for which you would like IP addresses to be assigned automatically. The devices must be configured to obtain their IP address automatically. The devices configuration utility should include a setup page that allows you to choose an option similar to the Obtain an IP address automatically option. For example, Windows TCP/IP Properties window is shown at the right. Although your device s configuration utility may look quite a bit different, this figure should give you some idea of what to look for. You also need to decide which of the LAPP switch s ports your Ethernet-enabled devices will be connected to. You will need to set up each of these ports separately, as described in the following step. STEP 2 Configure the LAPP switch s Set device IP function, either from the Console utility or from the Web Browser interface. In either case, you simply need to enter the Desired IP for each port that needs to be configured. STEP 3 Be sure to activate your settings before exiting. When using the Web Browser interface, activate by clicking on the Activate button. When using the Console utility, activate by first highlighting the Activate menu option, and then press Enter. You should receive the Set device IP settings are now active! (Press any key to continue) message. Configuring Set Device IP Automatic Set Device IP by DHCP/BootP/RARP Desired IP Address IP Address Set the desired IP of connected devices. None 3-40

53 Configuring DHCP Relay Agent The DHCP Relay Agent makes it possible for DHCP broadcast messages to be sent over routers. The DHCP Relay Agent enables DHCP clients to obtain IP addresses from a DHCP sever on a remote subnet, or those that are not located on the local subnet. DHCP Relay Agent (Option 82) Option 82 is used by the relay agent to insert additional information into the client s DHCP request. The Relay Agent Information option is inserted by the DHCP relay agent when forwarding client-originated DHCP packets to a DHCP server. Servers can recognize the Relay Agent Information option and use the information to implement IP addresses to Clients. When Option 82 is enabled on the switch, a subscriber device is identified by the switch port through which it connects to the network (in addition to its MAC address). Multiple hosts on the subscriber LAN can be connected to the same port on the access switch and are uniquely identified. The Option 82 information contains 2 sub-options, Circuit ID and Remote ID, which define the relationship between the end device IP and the DHCP Option 82 server. The Circuit ID is a 4-byte number generated by the Ethernet switch a combination of physical port number and VLAN ID. The format of the Circuit ID is shown below: FF VV VV PP This is where the first byte FF is fixed to 01, the second and the third byte VV-VV is formed by the port VLAN ID in hex, and the last byte PP is formed by the port number in hex. For example: F 03 is the Circuit ID of port number 3 with port VLAN ID 15. The Remote ID identifies the relay agent itself and can be one of the following: 1. The IP address of the relay agent. 2. The MAC address of the relay agent. 3. A combination of IP address and MAC address of the relay agent. 4. A user-defined string. 3-41

54 Server IP Address 1st Server IP address for the 1st Assigns the IP address of the 1st DHCP server that the switch None DHCP server tries to access. 2nd Server IP address for the 2nd Assigns the IP address of the 2nd DHCP server that the switch None DHCP server tries to access. 3rd Server IP address for the 3rd Assigns the IP address of the 3rd DHCP server that the switch None DHCP server tries to access. 4th Server IP address for the 4th Assigns the IP address of the 4th DHCP server that the switch None DHCP server tries to access. DHCP Option 82 Enable Option 82 Enable or Disable Enable or disable the DHCP Option 82 function. Disable Type IP Uses the switch s IP address as the remote ID sub. IP MAC Uses the switch s MAC address as the remote ID sub. IP Client-ID Uses a combination of the switch s MAC address and IP address IP as the remote ID sub. Other Uses the user-designated ID sub. IP Value Max. 12 characters Displays the value that was set. Complete this field if type is set Switch IP address to Other. Display read-only The actual hexadecimal value configured in the DHCP server for COA87FFD the Remote-ID. This value is automatically generated according to the Value field. Users cannot modify it. DHCP Function Table Enable Enable or Disable Enable or disable the DHCP Option 82 function for this port. Disable 3-42

55 Using Diagnosis The LAPP switch provides three important tools for administrators to diagnose network systems. Mirror Port The Mirror Port function can be used to monitor data being transmitted through a specific port. This is done by setting up another port (the mirror port) to receive the same data being transmitted from, or both to and from, the port under observation. Using a mirror port allows the network administrator to sniff the observed port to keep tabs on network activity. Mirror Port Settings Setting Monitored Port Watch Direction Mirror Port Description Select the number of one port whose network activity will be monitored. Select one of the following two watch direction options: Input data stream: Select this option to monitor only those data packets coming into the LAPP switch s port. Output data stream: Select this option to monitor only those data packets being sent out through the LAPP switch s port. Bi-directional: Select this option to monitor data packets both coming into, and being sent out through, the LAPP switch s port. Select the number of the port that will be used to monitor the activity of the monitored port. Ping The Ping function uses the ping command to give users a simple but powerful tool for troubleshooting network problems. The function s most unique feature is that even though the ping command is entered from the user s PC keyboard, the actual ping command originates from the LAPP switch itself. In this way, the user can essentially sit on top of the LAPP switch and send ping commands out through its ports. To use the Ping function, type in the desired IP address, and then press Enter from the Console utility, or click Ping when using the Web Browser interface. 3-43

56 LLDP Function Overview LLDP is an OSI Layer 2 protocol defined by IEEE AB. LLDP standardizes the self-identification advertisement method, and allows each networking device, such as a LAPP managed switch, to periodically send its system and configuration information to its neighbors. From the switch s web interface, you can enable or disable LLDP, and set the LLDP transmit interval. In addition, you can view each switch s neighbor-list, which is reported by its network neighbors. Configuring LLDP Settings General Settings LLDP Enable or Disable Enables or disables the LLDP function. Enable Message Transmit Interval 5 to sec. Sets the transmit interval of LLDP messages, in seconds. 30 (seconds) LLDP Table The LLDP Table displays the following information: Port Neighbor ID Neighbor Port Neighbor Port Description Neighbor System The port number that connects to the neighbor device. A unique entity (typically the MAC address) that identifies a neighbor device. The port number of the neighbor device. A textual description of the neighbor device s interface. Hostname of the neighbor device. 3-44

57 Using Monitor Access the monitoring page by selecting Monitor from the left selection bar. This feature allows the user to view a graph that shows the combined data transmission activity of all of the LAPP switch s ports. Click one of the two display modes - Bandwidth Utilization or Packet Counter to view transmission activity of all or specific ports graphically. Bandwidth Utilization Mode The graph displays the utilization of the bandwidth of the switch. While moving the mouse pointer to the graph, it will show the utilization rate of a specific time. Add different ports information in Display Setting. Choose the information you want in Port Selection and Sniffer Mode then click Add. The added information will be showed in the graph in a different color. Packet Counter Mode The graph displays the packet count of the switch s ports. While moving the mouse pointer to the graph, it will show the packet count of a specific time. 3-45

58 Add different ports' information in Display Setting. Choose the information you want in Port Selection, Sniffer Mode and Packet Type then click Add. The added information will be showed in the graph in a different color. In the summary table below, one of four options can be chosen Total Packets, TX Packets, RX Packets, or Error Packets. Users can view the transmission activity of specific types of packets on all or specific ports. Recall that TX Packets are packets sent out from the LAPP switch, RX Packets are packets received from connected devices, and Error Packets are packets that did not pass TCP/IP s error checking algorithm. 3-46

59 Using the MAC Address Table This section explains the information provided by the LAPP switch s MAC address table. The MAC Address table can be configured to display the following LAPP switch MAC address groups, which are selected from the drop-down list: ALL ALL Learned ALL Static Lock ALL Static ALL Static Multicast Port x Select this item to show all of the LAPP switch s MAC addresses. Select this item to show all of the LAPP switch s Learned MAC addresses. Select this item to show all of the LAPP switch s Static Lock MAC addresses. Select this item to show all of the LAPP switch s Static, Static Lock, and Static Multicast MAC addresses. Select this item to show all of the LAPP switch s Static Multicast MAC addresses. Select this item to show all of the MAC addresses dedicated ports. The table displays the following information: MAC Type Port This field shows the MAC address. This field shows the type of this MAC address. This field shows the port that this MAC address belongs to. Using Event Log 3-47

60 The Event Log Table displays the following information: Bootup Date Time System Startup Time Events This field shows how many times the LAPP switch has been rebooted or cold started. The date is updated based on how the current date is set in the Basic Setting page. The time is updated based on how the current time is set in the Basic Setting page. The system startup time related to this event. Events that have occurred. NOTE The following events will be recorded into the LAPP switch s Event Log Table: Cold start Warm start Configuration change activated Power 1/2 transition (Off ( On), Power 1/2 transition (On ( Off)) Authentication fail Topology changed Master setting is mismatched Port traffic overload Port link off/on Using Syslog The Syslog function provides the event logs for the syslog server. The function supports 3 configurable syslog servers and syslog server UDP port numbers. When an event occurs, the event will be sent as a syslog UDP packet to the specified syslog servers. Syslog Server 1/2/3 IP Address Enter the IP address of Syslog server 1/2/3, used by your None network. Port Destination (1 to 65535) Enter the UDP port of Syslog server 1/2/

61 NOTE The following events will be recorded into the LAPP switch s Event Log table, and will then be sent to the specified Syslog Server: Cold start Warm start Configuration change activated Power 1/2 transition (Off (On), Power 1/2 transition (On (Off)) Authentication fail Topology changed Master setting is mismatched Port traffic overload Port link off/on 3-49

62 4. ETHERLINE 4 ACCESS Configurator GUI ETHERLINE ACCESS Configurator is a comprehensive Windows-based GUI that is used to configure and maintain multiple LAPP switches. A suite of useful utilities is available to help you locate LAPP switches attached to the same LAN as the PC host (regardless of whether or not you know the IP addresses of the switches), connect to a LAPP switch whose IP address is known, modify the network configurations of one or multiple LAPP switches, and update the firmware of one or more LAPP switch. ETHERLINE ACCESS Configurator is designed to provide you with instantaneous control of all of your LAPP switches, regardless of location. You may download the ETHERLINE ACCESS Configurator software from LAPP s website free of charge. The following topics are covered in this chapter: Starting ETHERLINE ACCESS Configurator Broadcast Search Search by IP Address Upgrade Firmware Modify IP Address Export Configuration Import Configuration Unlock Server Set Default

63 Starting ETHERLINE ACCESS Configurator To start ETHERLINE ACCESS Configurator, locate and run the executable file. The ETHERLINE ACCESS Configurator window will open, as shown below. Broadcast Search Use the Broadcast Search utility to search the LAN for all LAPP switches that are connected to the LAN. Note that since the search is done by MAC address. Broadcast Search will not be able to locate LAPP switches connected outside the PC host s LAN. 1. Start by clicking the Broadcast Search icon, or select Broadcast Search under the List Server menu. The Broadcast Search window will open and display a list of all switches located on the network. Look in the Progress column to see the progress of the search. NOTE If you can't complete the Broadcast Search, please close the anti-virus software and try it again. 4-2

64 2. Once the search is complete, the Configurator window will display a list of all switches that were located. Search by IP Address Use the Search by IP Address utility to search for LAPP switches one at a time. Note that the search is conducted by IP address, so you should be able to locate any LAPP switch that is properly connected to your LAN, WAN, or the Internet. 1. Start by clicking the Specify by IP address icon, or by selecting Specify IP address under the List Server menu. The Search Server with IP Address window will open. Enter the IP address of the switch you wish to search for, and then click OK. 2. Once the search is complete, the Configurator window will add the switch to the list of switches. 4-3

65 Upgrade Firmware Keep your LAPP switch up to date with the latest firmware from LAPP. Perform the following steps to upgrade the firmware: 1. Download the updated firmware (*.rom) file from LAPP s website. 2. Click the switch (from the ETHERLINE ACCESS Configurator window) whose firmware you wish to upgrade to highlight it. 3. Click the Upgrade Firmware toolbar icon, or select Upgrade under the Firmware menu. If the switch is Locked, you will be prompted to input the switch s User Name and Password. 4. Use the Open window to navigate to the folder that contains the firmware upgrade file, and then click the correct *.rom file to select the file. Click Open to activate the upgrade process. 4-4

66 Modify IP Address You may use the Modify IP Address function to reconfigure the LAPP switch s network settings. 1. Start by clicking the Modify IP address icon, or by selecting Modify IP address under the Configuration menu. 2. The Setup Configuration window will open. Checkmark the box to the left of those items that you wish to modify, and then Disable or Enable DHCP, and enter the IP Address, Subnet mask, Gateway, and DNS IP. Click OK to accept the changes to the configuration. Export Configuration The Export Configuration utility is used to save the entire configuration of a particular LAPP switch to a text file. Take the following steps to export a configuration: 1. Highlight the switch (from the Server list in the Configurator window s left pane), and then click the Export toolbar icon or select Export Configuration from the Configuration menu. Use the Open window to navigate to the folder in which you would like to store the configuration, and then type the name of the file in the File name input box. Click Save to continue. 2. Click OK when the Export configuration to file OK message appears. 3. You may use a standard text editor, such as Notepad under Windows, to view and modify the newly created configuration file. 4-5

67 Import Configuration The Import Configuration function is used to import an entire configuration from a text file to the LAPP switch. The utility can be used to transfer the configuration from one LAPP switch to another, by first using the Export Configuration function (described in the previous section) to save a switch configuration to a file, and then using the Import Configuration function. Perform the following steps to import a configuration: 1. Highlight the server (from the Configurator window s left pane), and then click the Import toolbar icon, or select Import Configuration from the Configuration menu. 2. Use the Open window to navigate to the text file that contains the desired configuration. Once the file is selected, click Open to initiate the import procedure. 3. The Setup Configuration window will be displayed, with a special note attached at the bottom. Parameters that have been changed will be indicated with a checkmark. You may make more changes if necessary, and then click OK to accept the changes. Unlock Server The Unlock Server function is used to open a password protected switch so that the user can modify its configuration, import/export a configuration, and perform other procedures. There are six possible responses under the Status column. The Status of a LAPP switch indicates how ETHERLINE ACCESS Configurator located the switch, and what type of password protection it has. The types are: Locked The switch is password protected, Broadcast Search was used to locate it, and the password has not yet been entered from within the current Configurator session. Unlocked The switch is password protected, Broadcast Search was used to locate it, and the password was entered from within the current Configurator session. Henceforth during this Configurator session, activating various utilities for this switch will not require re-entering the server password. Blank The LAPP switch is not password protected, and Broadcast Search was used to locate it. 4-6

68 Follow the steps given below to unlock a locked LAPP switch (i.e., LAPP switch with Status Locked or Locked Fixed ). Highlight the server (from the EHTERLINE ACCESS Configurator window s left pane), and then click the Unlock toolbar icon, or select Unlock from the Configuration menu. 1. Enter the switch s User Name and Password when prompted, and then click OK. 2. When the Unlock status window indicates the Progress as OK, click the Close button in the upper right corner of the window. 3. The status of the switch will now be shown as Unlocked. 4-7